Used car guide

2018 Suzuki SX4 petrol: common problems and MOT failures

What MOT testers find on the petrol Suzuki SX4 first registered in 2018 (petrol cars only): we looked at the 7,678 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

7,678MOTs of 2018 petrol cars, done in 2023–2025
86%pass first time (all 2018 cars: 83%)
6,200typical miles a year
1.8×the usual rate for braking performance

What goes wrong more than usual on a 2018 Suzuki SX4 petrol?

Parts flagged at MOT more often on the 2018 Suzuki SX4 petrol than on all cars registered in 2018.

  • Braking performance1.8× usual
    Suzuki SX4
    2.2% All 2018 cars
    1.2%

    Failed outright at MOT: 0.4%, against 0.4% of all 2018 cars. The rest were advisories or minor defects.

    Rough price £100–£350 our estimate

    At the viewing: On a quiet road, brake firmly from about 30mph. The car should stop straight without pulling.

Common 2018 Suzuki SX4 petrol MOT failures and advisories

The share of 2018 Suzuki SX4 petrol MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Tyres
    27% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

  • Brakes
    18% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Wipers, windscreen and mirrors
    6% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

  • Lights and electrics
    5% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Seats and seatbelts
    3% of testsRough price £80–£250

    At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.

  • Suspension
    2% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

Known faults on the 2018 Suzuki SX4 petrol

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

Questions to ask the seller before buying a 2018 Suzuki SX4 petrol

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

  1. Any recent work on the braking performance? (Flagged at MOT 1.8× as often on the 2018 Suzuki SX4 petrol as on other cars the same age.)
  2. Can I see the service history and receipts for any big jobs?

Looking at a Suzuki SX4?

Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.

Other years

Every year of the Suzuki SX4 compared

YearMOT testsMost flagged
2025–Too new for MOT data
2024–Too new for MOT data
2023273Tyres 18%
20222,763Tyres 15%
20213,424Tyres 18%
20202,696Tyres 20%
20196,041Tyres 23%
20179,612Tyres 27%
201610,093Tyres 29%
201511,194Tyres 30%
201419,136Brakes 32%
20139,933Brakes 36%
20125,827Suspension 48%
20116,671Suspension 50%
20106,077Suspension 52%
20095,778Suspension 55%
20087,373Suspension 56%
20076,942Suspension 54%
20062,776Suspension 53%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Suzuki SX4 cars first registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score